Auto merge of #25338 - warren-fisher:master, r=jdm

Remove Optional pipeline_id

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All code that creates a WorkerScriptLoadOrigin passes a Some value for the pipeline, so we should remove the Option from the struct member field.

I changed the `WorkerScriptLoadOrigin` struct in `components/script_traits/lib.rs` to have a PipelineId and not an Option<PipelineId>. In `components/script/dom/worker.rs` and `components/script/dom/serviceworkerregistration.rs` it was changed so that `WorkerScriptLoadOrigin` was instantiated with a non-Optional. In `components/script/dom/dedicatedworkerglobalscope.rs` testing for if pipeline_id is an Optional is removed.

In `components/script/dom/serviceworkerglobalscope.rs` and `components/script/dom/dedicatedworkerglobalscope.rs` a `PipelineId` was provided as an Optional to a `RequestBuilder` and I changed it to provide a `Some(pipeline_id)` instead. I am not sure changing the [RequestBuilder struct](https://github.com/warren-fisher/servo/blob/5c3bda025144118fc8dd67a3f975d8f91fd25e78/components/net_traits/request.rs#L118-L159) at line 147 to accept a non-optional was within this issue so I left it as is.

I was able to successfully build it so I assume these changes worked, however I am not sure about the implications of the changes made in the unsafe block in `components/script/dom/dedicatedworkerglobalscope.rs`.

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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #24772 (GitHub issue number if applicable)

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- [ ] There are tests for these changes OR
- [x] These changes do not require tests because the issue says so

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